Which of the following is a common trigger for asthma?

Strong emotions are considered a common trigger for asthma because they can lead to changes in breathing patterns, such as hyperventilation or rapid breathing, which may irritate the airways and induce asthma symptoms. When an individual experiences intense emotions such as stress, anxiety, or excitement, it can cause the airways to constrict, leading to difficulty in breathing, wheezing, or coughing. This phenomenon can occur regardless of the individual's environment or physical activity, making emotional triggers particularly relevant for asthma management.

Fresh air is typically beneficial for individuals with asthma, as it can help to clear irritants that may be causing breathing difficulties. Sunlight itself is generally not a direct trigger for asthma, though excessive heat can sometimes provoke symptoms in sensitive individuals. Humidity can affect asthma in various ways; while high humidity can exacerbate symptoms by increasing the presence of allergens and irritants in the air, it is not as universally recognized as a trigger as strong emotional responses. Thus, when considering common triggers for asthma, strong emotions stand out, illustrating the connections between psychological factors and respiratory health.